Convert land area from acres to hectares, or switch direction to convert hectares to acres. Choose your decimal places, review the calculation and copy your result.
Enter your land area, select your units and review the conversion in four simple steps.
Select acres to hectares, or choose hectares to acres. Check the input label so your measurement matches the selected unit.
Enter zero or a positive number, including decimals. For a measurement such as 2½ acres, enter 2.5. Your result updates as you type.
Choose two, four or six decimal places for the displayed result. More places reduce rounding, which can be useful when comparing smaller land areas.
Review the converted area and calculation, then select Copy Result. If automatic copying is unavailable, select and copy the text provided below.
Start with an area, not a side length. If your land measurement is in square feet, use the square feet to acres converter first. Switching direction keeps your entered number; enter the converted result yourself to convert it back.
Multiply acres by 0.40468564224 to get hectares. Divide hectares by the same factor to convert back to acres.
To express a property listed as 10 acres in hectares, multiply its acreage by the full conversion factor.
Hectares = acres × 0.40468564224
10 × 0.40468564224 = 4.0468564224 ha
To compare a field measured in hectares with an acreage listing, divide its area by the acre-to-hectare factor.
Acres = hectares ÷ 0.40468564224
5 ÷ 0.40468564224 ≈ 12.3552690734 acres
Why this conversion factor? An international acre equals 4,046.8564224 square meters, while a hectare equals 10,000 square meters. Dividing 4,046.8564224 by 10,000 gives 0.40468564224. See Math Is Fun’s explanation of an acre for its relationship to metric area units.
Compare common land areas below. Hectare equivalents are rounded to four decimal places.
| Acres (ac) | Hectares (ha) |
|---|---|
| 0.10 | 0.0405 |
| 0.25 Quarter acre | 0.1012 |
| 0.50 Half acre | 0.2023 |
| 0.75 | 0.3035 |
| 1 One acre | 0.4047 |
| 2 | 0.8094 |
| 2.5 | 1.0117 |
| 5 | 2.0234 |
| 10 | 4.0469 |
| 20 | 8.0937 |
| 25 | 10.1171 |
| 40 | 16.1874 |
| 50 | 20.2343 |
| 100 | 40.4686 |
| 250 | 101.1714 |
| 500 | 202.3428 |
| 1,000 | 404.6856 |
Need a different acreage? Use the area converter for your measurement, or switch to hectares to acres. Calculate with the full conversion factor and round your final result rather than using a rounded table value for another calculation.
Find answers about acres, hectares, land dimensions and conversion rounding.
One international acre equals exactly 0.40468564224 hectares. Rounded to four decimal places, that is 0.4047 ha. Use the full factor for calculations and round the final result.
Yes. One hectare equals 10,000 square meters, while one acre equals 4,046.8564224 square meters. A hectare is approximately 2.4711 acres.
They are close, but not equal. 2.5 acres equal 1.0117141056 hectares, which is slightly more than one hectare. One hectare is approximately 2.4711 acres.
Multiplying by 0.4 gives a rough estimate that is about 1.16% lower than the full-factor conversion. For example, 100 acres would become 40 ha using the shortcut, compared with approximately 40.4686 ha. Use 0.40468564224 when you need a closer result.
A square measuring 100 meters by 100 meters has an area of one hectare, but a hectare does not require that shape. A rectangle measuring 50 meters by 200 meters also covers 10,000 m², or one hectare.
If you already know the field’s total acreage, enter it directly. The conversion factor is the same for every shape. If you only have dimensions, calculate the total area first, avoiding overlapping sections. For measurements in feet, the square footage calculator can help calculate individual areas.
Yes, by expressing both prices in the same area unit. Divide a price per acre by 0.40468564224 to get its equivalent price per hectare. Multiply a price per hectare by 0.40468564224 to get its equivalent price per acre. This converter handles area values; calculate prices separately.
Entering a rounded result for the reverse conversion can introduce a small difference because some digits were removed. Choose more decimal places to reduce this effect. Switch Direction keeps your original input number; enter the converted result yourself if you want to convert it back.
Enter your acreage to see its hectare equivalent, review the calculation and copy your result. You can also convert hectares back to acres.
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